Acid-chamber for gas-generators



(No Model.)

H. HOPF.

ACID CHAMBER EOE GAS GENERATORS.

No. 365,254. Patented June 21, 1887.

W/T/VESSES ATTORNEY r4. ETERS. Phcm-mhagnpher, Washingiun. n.-c.

UNITE STATES PATENT OFFICE.

HERMAN HOFF, OF CHICAGO, ILLINOIS.

ACID-CHAMBER FOR GAS-GENERATORS.

SPECIFICATION forming part of Letters Patent No. 365.254, dated June 21, 1887.

Application filed January 15, 18:57. Serial No. 224.394. (No model.)

To all whom it may concern.-

Be it known that I, HERMAN HOFF, a citizen of the United States, and a resident of Chicago, county of Cook, and State of Illinois, have invented new and useful Improvements in Acid-0hambers for GasGenerators, of which the following is a specification, reference being had to the accompanying drawings,illustrating the invention, in which- Figure 1 is a vertical sectional elevation of my improved acid-chamber; Fig. 2, a horizontal section thereof on line :0, Fig. 1.

This invention relates to an improvement in acid-chambers to be used in connection with an alkalinechamber for generating carbonic-acid gas in the manufacture of sodawater; and the particular improvement consists of a siphon-pipe in connection with a plunger-valve, the advantage of which is a simplification and compactness of the parts and greater certainty of action.

In the operation of an apparatus for charging water with carbonic-acid gas it is necessary to have at a certain time a free circulation of the gas through both the acid and alkaline or marble-dust chambers and then to drain the acid-chamber that the chemicals may be neutralized. This has been before accomplished by a stationary siphon placed either outside or inside of the acid-chamber. My internal siphon is, however,a material improvement over those formerly employed, not only as to the advantages mentioned, but in the simplicity of its operation and durability.

AI represent the shell of the acid-chamber Q, which is made of cast-iron and lined with lead,a,or other non-corrosive metal.

R T represent the pipe which is to connect with an alkaline-chamber in the same manner that the two chambers are now connected by a like pipe. This pipe is. also lined at r by non-corrosive metal, which is enlarged at E to form a seat for the plunger-valve B. This valve is made of non-corrosive metal and has formed in it a passage, G, which when the valve is on its seat E, communicates with the pipe R T, the two passages O and R T forming the longer pipe of the siphon, the shorter pipe of which is shown at D. The upper end of the plunger 13 connects with a stem, J, which is supported by ordinary mechanism,

L M, the upper end of the stem being provided with a screw-thread, N, whereby a lever nut, K, may be turned to shut or unseat the valve B.

H represents the ordinary acid-supply pipe, and W' the pipe which is to be connected with an ordinary pipe leading to the alkaline-chamber below.

S represents a check-valve, employed simply to stop the 110w of acid from chamber A in case the valve B should not shut tight on its seat, or when the communication of the two chambers is to be suspended and thevalve B left open.

The operation is as follows: The valves B G are to be shut, as shown, and the valve S opened and the fluid acid put in the chamber Q. The valve G is then to be opened and the valve B to be raised by the lever nut K,allowing the acid to enter the alkaline-chamber below and the pressure in the two chambers to equalize. The valves G B are then to be shut and the contents of the alkaline-chamber to be drawn off till it has two or three pounds less pressure than the acid chamber. The valve ,or cook G is then to be opened. This will set the siphon O D to work till the contents of the chamber Q are drawn off into the chamber below and the chemicals neutralized. It is proper to state that the pipe W,which is to have a tight connection with the alkalinechamber helow,is simply to obtain a quicker equalization before the siphon is put to work. Therefore nothing new is claimed for it.

, I claim as new and desire to secure by Letters Patent of the United States In acid chambers for gas-generators, the vertical reciprocating valve B, placed therein and having a vertical pipe, 0, formed within its lower portion,and the pipe D, connecting with the upper end ofpipe O, to formasiphon, and the stem part J of the valve,provided with a screw-thread, N, passing through a nut at the top portion of the case attachment L M, in combination with the lever-nut K, for operating the valve the same as specified.

HERMAN HOFF.

I/Vitnessesz G. L. OHAPIN, ANNA D. J oHNsoN. 

